出砂井射孔套管变形分析及射孔参数优化  

Deformation Analysis of Perforation Casings and Optimization of Perforation Parameters in Sand Production Wells

作　　者：姜广彬 郭晓强 张瑞霞 柳军[2] JIANG Guangbin;GUO Xiaoqiang;ZHANG Ruixia;LIU Jun(Petroleum Engineering Technology Research Institute,Shengli Oilfield Branch of SINOPEC,Dongying 257000,Shandong,China;School of Mechanical Engineering,Southwest Petroleum University,Chengdu 610500,Sichuan,China)

机构地区：[1]中国石油化工股份有限公司胜利油田分公司石油工程技术研究院,山东东营257000 [2]西南石油大学机电工程学院,四川成都610500

出　　处：《济南大学学报（自然科学版）》2022年第1期86-91,99,共7页Journal of University of Jinan(Science and Technology)

基　　金：国家重点研发计划项目(2018YFC0310201);中国博士后科学基金特别资助(站前)项目(2021TQ0273)。

摘　　要：针对出砂井因上覆地层沉降与射孔段地层空洞而导致的射孔套管变形问题,采用有限元分析软件,建立考虑上覆地层位移与出砂空洞的射孔套管变形分析模型,采用经典Lame公式验证模型的正确性,分析射孔孔眼密度、孔径和射孔相位角对射孔套管变形的影响。结果表明:出砂井射孔套管在轴向载荷作用下的变形不同于在径向挤压作用下的变形,微小的上覆地层位移就能导致射孔套管发生大变形;当射孔孔眼密度为25~30 m^(-1),孔径为13~15 mm,相位角为45°、60°或90°时,能够有效减小上覆地层位移造成的射孔套管变形。Aiming at the problem of perforation casing deformation in sand production wells caused by overlying formation settlements and formation cavities in perforated sections,finite element analysis software was used to establish a perforation casing deformation analysis model considering the displacement of overlying formation and sand production cavities.The correctness of the model was verified by using classic Lame formula,and the influence of perforation density,perforation aperture,and phase angle on the deformation of perforated casings was analyzed.The results show that the deformation of perforated casings in sand production wells under axial load is different from that under radial compression.Even a small displacement can lead to large deformation of perforated casings.When the perforation density is from 25 m^(-1) to 30 m^(-1),the perforation aperture is from 13 mm to 15 mm,and the phase angle is 45°,60°or 90°,the perforation casing deformation caused by the displacement of overlying formation can be effectively reduced.

关 键 词：出砂井 射孔套管 射孔参数 变形分析模型 上覆地层位移 

分 类 号：TE256[石油与天然气工程—油气井工程] TE257